Hi,
I downloaded and installed in Montana 650 in SD/Garmin/gmapsupp CN India_2012_30 as per some other maps how I did it. But when it was booted, shows " Map can not be Unlocked". But it works on Garmin Nuvi 2565 for car use as SD/map/ India_2012_30. I ll bring only Montana during trip to India. Any advice will be appreciated.

Hi,
I downloaded and installed in Montana 650 in SD/Garmin/gmapsupp CN India_2012_30 as per some other maps how I did it. But when it was booted, shows " Map can not be Unlocked". But it works on Garmin Nuvi 2565 for car use as SD/map/ India_2012_30. I ll bring only Montana during trip to India. Any advice will be appreciated.

Map works fine in my 34xx and you can see screens from it in post 21 and 25, you made something wrong probably.
Check if it's unlocked and if map name is correct

Thank you. There was nothing wrong with the things I did. Just the map had a CRC error while unzipping the two files.
I now got the correct version and it works fine i addition to MMI maps. I have selected both as active.